MTL 5541 1-Channel Intrinsically Safe Isolator

Technical Specifications

Power Supply
- The safe area supply voltage ranges from 20V DC to 35V DC, with a typical operating voltage of 24V DC.
- The current consumption is 51mA when powered by 24V DC, and the maximum power dissipation is 0.7W at 24V DC, which can reach 1.0W in specific working conditions.
- The transmitter voltage is 16.5V when the current is 20mA.
Signal Parameters
- The hazardous area input signal range is 0 – 24mA, covering over-range signals, and the safe area output signal range is 4 – 20mA.
- The load resistance can be up to 360Ω when the current is 24mA, and up to 450Ω when the current is 20mA.
- The response time settles to within 10% of the final value in 50μs, and the temperature drift is less than 0.8μA per degree Celsius.

Category: Others

Description

- Isolation Performance
  - The isolation voltage between safe-area and hazardous-area terminals is 250V RMS, with a minimum test voltage of 1500V RMS.
  - The isolation voltage between safe-area circuits and the power supply is 50V AC or DC.
  - The safe-area circuit output resistance exceeds 1MΩ, and the ripple current is less than 50μA peak-to-peak.
- Environmental Limits
  - The operating temperature ranges from -20°C to 60°C, and the storage temperature ranges from -40°C to 80°C.
  - It can operate normally in an environment with a relative humidity of 5% to 95%.
- Physical Characteristics
  - It adopts 35mm DIN rail mounting complying with EN 50022 standards.
  - The external dimensions are 109.8mm in length/height, 15.8mm in width, and 123.6mm in depth.
  - The weight is approximately 110g to 150g, and the terminals can accommodate 2.5mm² stranded or single-core wires.
- Certifications
  - It holds certifications such as ATEX 213 and IECEx BAS 15.0119 X, meeting the safety standards for hazardous area applications.
Functional Features
- Intrinsic Safety Isolation
  - It provides effective galvanic isolation between hazardous areas and safe areas, preventing unsafe electrical energy from spreading to hazardous areas and avoiding safety hazards such as fires and explosions caused by electrical faults.
- Dual Compatibility with Transmitters
  - It is fully compatible with conventional 2 – wire and 3 – wire 4 – 20mA transmitters. For smart 2 – wire HART transmitters, it can superimpose bidirectional communication signals on the 4 – 20mA current loop to meet the data interaction needs of smart industrial equipment.
- Stable Signal Transmission
  - With low temperature drift and fast response time, it can maintain signal stability even in environments with large temperature fluctuations, ensuring the accuracy of data transmission in industrial control systems.
- Easy Installation and Maintenance
  - The DIN rail mounting design and plug-in signal and power connectors allow quick integration into industrial control cabinets without complex wiring operations.
  - It is equipped with a green LED power indicator, enabling operators to directly check the power supply status of the device and quickly locate faults.
- Strong Load Adaptability
  - It can match various loads within the specified resistance range, and the maximum current sink can reach 600Ω, adapting to different configurations of industrial control loops without additional matching resistors.
Application Scenarios
- Oil and Gas Industry
  - It is used in hazardous areas such as oil drilling platforms and natural gas processing plants to power and transmit signals for pressure and flow transmitters. It ensures the stable transmission of key process data such as pipeline pressure and oil flow to the central control system, supporting the safe operation of remote monitoring equipment.
- Water and Wastewater Treatment
  - It is widely used in water treatment plants to connect with level, flow, and pressure sensors. It transmits the collected water treatment process data to the control system, ensuring the stable operation of processes such as water purification and sewage discharge.
- Energy Management Systems
  - It is integrated into industrial energy management systems to power devices that measure power consumption and energy efficiency. It accurately transmits energy data to optimize energy allocation and improve the energy utilization efficiency of enterprises.
- Building Automation
  - It is incorporated into building management systems for HVAC, ventilation, and environmental monitoring. It connects with temperature and humidity sensors to transmit signals stably, helping to adjust equipment operating parameters in real time and optimize building energy consumption.
- General Industrial Measurement and Testing
  - It is applied to test systems and measurement instruments in manufacturing fields. It provides reliable power for signal transmitters and sensors, ensuring accurate data acquisition in product testing and production process monitoring, which lays a foundation for quality control.

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